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    Diferencias morfol贸gicas y de condici贸n f铆sica en futbolistas adolescentes seg煤n posici贸n de juego: una revisi贸n sistem谩tica

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    Introduction: The aim of this systematic review was to analyze the studies that evaluate morphological and physical fitness differences in young soccer players according to playing position.Material and Methods: For its elaboration, the PRISMA-P protocol was followed, the PubMed/MEDLINE database was used, and the Downs & Black methodological quality assessment was applied. Six studies met all the selection criteria, adding 784 soccer players (229 defenders [DF]; 271 midfielders [MF], 168 forwards [FW] and 69 goalkeepers [GK]) with a mean age of 16.2 years.Results: The analyzed studies indicate, that GK and DF have a height, body weight, endomorphic component and body fat higher than MF and FW, except for one study that reports higher values for body weight in FW and DF with respect to MF. In relation to physical fitness, the maximum squat exhibited higher values for FW compared to MF; cardiorespiratory fitness was higher in DF and MF when compared with GK and abdominal muscle resistance was greater in MF compared to DF. Conclusion: The GK and DF show greater height, body weight and body fat than the MF and FW. While physical fitness indicates that FW show greater lower body strength, MF and DF achieve greater cardiorespiratory fitness and MF present greater abdominal muscle resistance when young soccer players are analyzed according to playing position.Introducci贸n: El objetivo de la presente revisi贸n sistem谩tica fue analizar los estudios que eval煤an las diferencias morfol贸gicas y de condici贸n f铆sica en futbolistas adolescentes seg煤n posici贸n de juego.Material y m茅todos: Para su elaboraci贸n se sigui贸 el protocolo PRISMA-P, se utiliz贸 la base de datos PubMed/MEDLINE y se aplic贸 la evaluaci贸n de calidad metodol贸gica de Downs & Black. Seis estudios cumplieron con todos los criterios de selecci贸n, sumando 784 futbolistas (229 defensas [DF]; 271 mediocampistas [MC], 168 delanteros [DL] y 69 porteros [PT]) con una edad media de 16,2 a帽os. Resultados: Los estudios analizados indican que los PT y DF poseen una altura, peso corporal, componente endom贸rfico y grasa corporal mayor que MC y DL, excepto un estudio que reporta valores m谩s altos para peso corporal en DL y DF respecto a MC. En relaci贸n a la condici贸n f铆sica, la sentadilla m谩xima exhibi贸 valores m谩s elevados para DL respecto a MC; la capacidad cardiorrespiratoria fue superior en DF y MC al compararlos con PT y la resistencia muscular abdominal fue mayor en MC respecto a DF. Conclusi贸n: Los PT y DF ostentan mayor altura, peso corporal y grasa corporal que los MC y DL. Mientras que la condici贸n f铆sica, indica que los DL demuestran mayor fuerza del tren inferior, los MC y DF consiguen mayor capacidad cardiorrespiratoria y los MC presentan mayor resistencia muscular abdominal cuando se analizan futbolistas adolescentes seg煤n posici贸n de juego

    Diferencias morfol贸gicas y de condici贸n f铆sica en futbolistas adolescentes seg煤n posici贸n de juego: una revisi贸n sistem谩tica

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    Introduction: The aim of this systematic review was to analyze the studies that evaluate morphological and physical fitness differences in young soccer players according to playing position. Material and Methods: For its elaboration, the PRISMA-P protocol was followed, the PubMed/MEDLINE database was used, and the Downs & Black methodological quality assessment was applied. Six studies met all the selection criteria, adding 784 soccer players (229 defenders [DF]; 271 midfielders [MF], 168 forwards [FW] and 69 goalkeepers [GK]) with a mean age of 16.2 years. Results: The analyzed studies indicate, that GK and DF have a height, body weight, endomorphic component and body fat higher than MF and FW, except for one study that reports higher values for body weight in FW and DF with respect to MF. In relation to physical fitness, the maximum squat exhibited higher values for FW compared to MF; cardiorespiratory fitness was higher in DF and MF when compared with GK and abdominal muscle resistance was greater in MF compared to DF. Conclusion: The GK and DF show greater height, body weight and body fat than the MF and FW. While physical fitness indicates that FW show greater lower body strength, MF and DF achieve greater cardiorespiratory fitness and MF present greater abdominal muscle resistance when young soccer players are analyzed according to playing position.Introducci贸n: El objetivo de la presente revisi贸n sistem谩tica fue analizar los estudios que eval煤an las diferencias morfol贸gicas y de condici贸n f铆sica en futbolistas adolescentes seg煤n posici贸n de juego. Material y m茅todos: Para su elaboraci贸n se sigui贸 el protocolo PRISMA-P, se utiliz贸 la base de datos PubMed/MEDLINE y se aplic贸 la evaluaci贸n de calidad metodol贸gica de Downs & Black. Seis estudios cumplieron con todos los criterios de selecci贸n, sumando 784 futbolistas (229 defensas [DF]; 271 mediocampistas [MC], 168 delanteros [DL] y 69 porteros [PT]) con una edad media de 16,2 a帽os. Resultados: Los estudios analizados indican que los PT y DF poseen una altura, peso corporal, componente endom贸rfico y grasa corporal mayor que MC y DL, excepto un estudio que reporta valores m谩s altos para peso corporal en DL y DF respecto a MC. En relaci贸n a la condici贸n f铆sica, la sentadilla m谩xima exhibi贸 valores m谩s elevados para DL respecto a MC; la capacidad cardiorrespiratoria fue superior en DF y MC al compararlos con PT y la resistencia muscular abdominal fue mayor en MC respecto a DF. Conclusi贸n: Los PT y DF ostentan mayor altura, peso corporal y grasa corporal que los MC y DL. Mientras que la condici贸n f铆sica, indica que los DL demuestran mayor fuerza del tren inferior, los MC y DF consiguen mayor capacidad cardiorrespiratoria y los MC presentan mayor resistencia muscular abdominal cuando se analizan futbolistas adolescentes seg煤n posici贸n de juego
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